Clamp for repairing leaks in pipe-joints.



m. 643,200. Patented Feb. l3, I900;

c. m. RANKERT.

CLAMP FDR REPAIRING LEAKS IN PIPE JOINTS.

(Application filed July 31, 1899.)

(NoModeL) UNITED STATES PATENT OFFICE.

CHARLES M. RANKERT, OF CHICAGO, ILLINOIS.

CLAMP FOR REPAIRING LEAKS IN PIPE-JOINTS.

SPECIFICATION forming part of Letters Patent No. 643,200, dated February13, 1900. Application fi July 31, 1899. Serial No. 725,708. (No model.)

To all whom it may concern.-

Be it known that I, CHARLES M. RANKERT, a citizen of the United States,residing at Chicago, in the county of Cook, State of Illinois, haveinvented a new Clamp for Repair-- ing Leaks in Pipe-Joints, of which thefollowing is a specification.

My invention relates to improvements in'a clamp for stopping leaks inpipe-joints.

This clamp consists of sections which are bolted together.

This clampis composed of two metallic concentric rings, the outer ringserving as a retainer for the inner ring, which latter is of a flexiblemetal. The retaining-ring contains set-screws for holding the clampsecurely in position on the pipe.

The objects of my improvement are, first, to provide a substantialretaining-ring containing a flexible metal which is calked into theleaky crevices; secondly, to provide ease in placing it on the pipe;thirdly, to provide against displacement on the pipe by clamping, and,fourthly, to provide against displacing of the clamp by means ofset-screws, as shown. I attain these objects by the mechanismillustratedin the accompanying drawings, in Which-- Figure 1 is aperspective view of the entire clamp. Fig. 2 is a longitudinal sectionof clamp in place on a pipe. Fig. 3 is an end View of clamp in place ona pipe.

Similar letters refer to similar parts througlr out the several views.

A is a retainingq'i'ng, consisting of sections which are bolted togetherso as to clamp securely to. the pipe E. The inner flexible metal ring B,which is to be calked against flange F, retaining-ring A, has on itsinner surface a groove D to hold flexible-metal ring D in place.Set-screws C, Fig. 3, prevent clamp from sliding on pipe E.

What I claim as my invention, and desire to secure by Letters Patent,is'- l. The combination of a metallic retainingring consisting ofsections bolted together, and of an interior diameter larger than theexterior diameter of the pipe, means for securing the same rigidly uponthe pipe, and a flexible or soft metal ring retained between the pipeand said retaining-ring and adapted to be calked against the fittinguponthe end of said pipe.

2. The combination of a sectionalretaining-ring adapted to be rigidlysecured upon the pipe leaving an annular space between it and said pipeand a flexible or soft metal ring engaged in said space and by rib andgroove with said vertical ring and adapted to be calked upon the fittingupon the pipe.

CHARLES M. RANKERT.

Witnesses:

E. H. MCFARLAND, A. W. MOFARLAND.

